Management Update

Summary by AI ^BETAClose X

Greatland Resources Limited announced the resignation of its Chief Operating Officer, Simon Tyrrell, who will remain available until June 30, 2026, to facilitate a smooth transition. Otto Richter, with over 25 years of gold mining experience and a key member of the senior leadership team since 2021, has been appointed as Acting COO while a permanent replacement is sought. The company expressed appreciation for Mr. Tyrrell's contributions to safety and operational outcomes.

Disclaimer*

Greatland Resources Limited

18 February 2026

A close-up of a logo AI-generated content may be incorrect. Greatland Resources Limited

E: info@greatland.com.au

W: https://greatland.com.au

twitter - ICAT : x.com/greatlandgold

NEWS RELEASE | 18 February 2025

Management Update

Greatland Resources Limited (Greatland or Company) advises that Chief Operating Officer (COO) Simon Tyrrell has resigned and stepped down from his role. Mr Tyrrell is available to the Company until 30 June 2026 to assist with the transition of the role.

Otto Richter has been appointed as Acting COO. Mr Richter has served as Greatland's Group Mining Engineer since 2021 and has over 25 years of experience, predominantly in open pit and underground gold mining. During his time at Greatland, he has been a key member of the senior leadership team involved in operational and mine planning decisions and has a detailed understanding of the Company's assets.

A formal process to fill the COO role permanently is underway.

Greatland Managing Director, Shaun Day, commented:

"Simon has been an important part of Greatland's management team and we appreciate his positive contribution towards the Company's safety and operational outcomes. I thank Simon for his efforts and commitment to Greatland and wish him well in his future endeavours."

Contact

For further information, please contact:

Greatland Resources Limited

Shaun Day, Managing Director | Andrew Bowler, Head of Investor Relations

info@greatland.com.au

Nominated Advisor

SPARK Advisory Partners

Andrew Emmott / James Keeshan / Neil Baldwin | +44 203 368 3550

Corporate Brokers

Canaccord Genuity | James Asensio / George Grainger | +44 207 523 8000

RBC Capital Markets | James Agnew / Jamil Miah | Scott Redwood | +44 207 029 0528

Media Relations

Australia - Fivemark Partners | Michael Vaughan | +61 422 602 720

About Greatland

Greatland is a gold and copper mining company listed on the Australian Securities Exchange and London Stock Exchange's AIM Market (ASX:GGP and AIM:GGP) and operates its business from Western Australia.

The Greatland portfolio includes the 100% owned Telfer mine, the adjacent 100% owned brownfield world-class Havieron gold-copper development project, and a significant exploration portfolio within the surrounding region. The combination of Telfer and Havieron provides for a substantial and long life gold-copper operation in the Paterson Province in the East Pilbara region of Western Australia.

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